A buffer overflow vulnerability in MaraDNS allows remote attackers to execute arbitrary code or cause a Denial of Service.
|Package||net-dns/maradns on all architectures|
|Affected versions||< 1.4.06|
|Unaffected versions||>= 1.4.06|
MaraDNS is a proxy DNS server with permanent caching.
A long DNS hostname with a large number of labels could trigger a buffer overflow in the compress_add_dlabel_points() function of dns/Compress.c.
A remote unauthenticated attacker could execute arbitrary code or cause a Denial of Service.
There is no known workaround at this time.
All MaraDNS users should upgrade to the latest stable version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.06"
NOTE: This is a legacy GLSA. Updates for all affected architectures are available since February 12, 2011. It is likely that your system is already no longer affected by this issue.
November 20, 2011
November 20, 2011: 1